HIBP Demo: Querying the API, and the Free Test Key!
One of the most common use cases for HIBP's API is querying by email address, and we support hundreds of millions of searches against this endpoint every month. Loads of organisations use this service to understand the exposure of their customers and provide them with better protection against account takeover attacks. Many also use it to support customers who've already fallen victim - "hey, did you know HIBP says you're in 7 data breaches, any chance you've been reusing passwords?" Some compan...